Gold disc collected by ace Bananarama for one musical work (8)
I believe the answer is:
oratorio
'one musical work' is the definition.
(I've seen this before)
'gold disc collected by ace bananarama' is the wordplay.
'gold' becomes 'or' ('or' is the heraldic name for gold).
'disc' becomes 'O' (disc-shaped letter).
'collected by' says to put letters next to each other (I've seen this in other clues).
'ace' becomes 'a' (abbreviation).
'bananarama' becomes 'tori' (I can't explain this - if you can you should give a lot more credence to this answer).
'a'+'tori'='atori'
'o' put after 'atori' is 'atorio'.
'or'+'atorio'='ORATORIO'
'for' is the link.
Can you help me to learn more?
(Other definitions for oratorio that I've seen before include "Religious musical work" , "Music for voices and orchestra with biblical theme" , "Work for voices, chorus and orchestra with biblical theme" , "Major choral work" , "Handel's Messiah, for example" .)